Stamps are kind of a thing there, used as personal signatures as well as in business. One of the fun things you can collect during a visit are the stamps from various train stations, temples, some businesses and destinations.
It is a bit of a scavenger hunt, finding the one stamp at most Stations consisted of finding a station office, an official there who understood what I meant when asking for the Station stamp and then, many times, finding the right office that actually has the stamp. I did not collect a stamp from every station we went through, sometimes they were just too crowded or the office was too far away so I would have to skip it.
Temple stamps were not as difficult but many of the temples we chose to visit just did not have them.
I collected a fair amount of stamps from the 7 Hells of Beppu and those were a lot of fun and easy to to find.



Honjo-Azumabashi Station, Tokyo Subway 

____ Shinkansen Train Station 
Kyoto Train Station 
Higashi Honganji Temple, Kyoto 

Otagi Nenbutsu-Ji Temple, Kyoto 
Osaka Train Station 
Hiroshima Train Station #1 
Hiroshima Train Station #2 
Beppu Train Station 
Kamado Jigoku (Furnace), 7 Hells of Bellu 

Monk head Hell 
White hell 
Oniyama Jigoku (Devil Mountain Hell),
7 Hells of Bellu

Tatsumaki Jigoku (Tornado Hell),
7 Hells of Bellu
Umi Jigoku (Ocean Hell),
7 Hells of Bellu

Shibuya 

Yufuin Train Station 
Yufuin Train Station
